by-it.dk

📜 Historical scan 2026-06-16 18:05:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

by-it.dk is a .dk domain served by 3 nameservers (ns4.dns-123.net, ns5.dns-123.net, ns6.dns-123.net). It was registered on 21 January 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.186.164.166 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by server7166.serverpark.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 171ms

Nameserver	IP addresses	PTR	ASN / ISP
ns4.dns-123.net	—	—	—
ns5.dns-123.net	—	—	—
ns6.dns-123.net	—	—	—

🌍 A Records#

1 records 192ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.186.164.166	—	server7166.serverpark.dk	AS44869	FIBIA P/S	5.186.0.0/16	🇩🇰 Denmark	Frederiksberg

📧 MX Records#

1 records 188ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	server7166.serverpark.dk	5.186.164.166	server7166.serverpark.dk	AS44869 FIBIA P/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 356ms

TXT Record
v=spf1 a mx include:_spf.serverpark.dk ~all

✉️ SPF#

Policy	Record (by-it.dk)
~all (soft fail)	v=spf1 a mx include:_spf.serverpark.dk ~all

📨 DMARC#

Policy	Record (_dmarc.by-it.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 16:29:55

www	5.186.164.166 (AS44869) (address records, no CNAME)
www vs bare domain	Same network by-it.dk: 5.186.164.166 (AS44869) www.by-it.dk: 5.186.164.166 (AS44869)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

298ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

164ms

Field	Value
Serial	2022060201
Primary NS (MNAME)	ns4.dns-123.net
Responsible (RNAME)	admin@dns-123.net
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-12 18:58:01

Field	Value
Registrar	INTERNET 123 ApS
Registered	2002-01-21
Expires	2028-03-31 (530d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

171ms

192ms

188ms

AAAA

161ms

TXT

356ms

CAA

218ms

HTTPS

181ms

TLSA

231ms

SOA

164ms

MTA-STS

213ms

DNSSEC

298ms

SRV

0ms

Total

1560ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-14 18:47:24	769ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-28 04:31:50	892ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-26 18:05:09	920ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-25 16:56:13	772ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-20 05:32:32	697ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:07:26	713ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:05:33 shown	1560ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:01:02	2658ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:00:04	876ms	3 NS 1 A 1 MX	🔒 Secure